Tenant wanted to do upgrades in apartment. Homeowner said that was fine with him as long as tenant paid for the upgrades. work was done in two parts. Part A was compleated and paid for. Part B was compleated and tenant refused to pay stating "I am not going to pay you because i have spent the money on something else". I sent 3 certified letters about 30 days apart with offers to pay in installments. I received no response. This was two and a half years ago. Do i still have recorse to collect amount due with costs and interest?